3. put collected samples in one-off plastic valve bags. If there is no plastic valve bag on the spot, put visceral organs in one-off gloves. In summary, the principle is to prevent pathogene from leaking and prevent samples from being polluted.

5. put samples into refrigerator right after being collected. Pack them hermetically during transportation (must use sealed, crush-resistant and leaking-proof cases like bubble chamber, plastic case to prevent pathogene from spreading) and keep them in low-temperature environment.

6. during the course from collecting samples to sending them to the laboratory, bear in mind that freeze and thaw them repeatedly.